JPH10184012A - Reinforcement binding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive reinforcement binding device that is simple- structured and can be downsized. SOLUTION: A binding device has a disk 2, a mounting shaft 3 is provided in the center of the disk 2, through holes 5, 5 for an iron wire 4 which is made a U shape by bending it toward both sides of the mounting shaft 3, are faced to each other, and formed into an inverted funnel state by chamfering the angular parts of their open undersides, and the rising parts 4a, 4a of the U-shaped iron wire 4 are pushed upward and fitted while pressed against both sides of the reinforcement 7 to which they are to be bound. Furthermore, the upper ends of the iron wire 4 are protruded upward, and their heads are inserted into the through holes 5, 5 provided in the disk 2, and the disk 2 is rotated several times by the rotation of a motor to which the mounting shaft 3 provided in the center of the disk 2 is bound so that the U-shaped iron wire 4 may bind reinforcements 7, 7 while being twisted at the top of the reinforcements 7, 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar binding device, and more particularly to a reinforcing bar binding device for binding crossing reinforcing bars when constructing a reinforcing bar structure.

[0002]

2. Description of the Related Art Conventionally, this type of rebar binding machine is disclosed in
The thing disclosed in 191719 publication is known. Thus, the binding machine disclosed in the publication has an arc-shaped passage, and a binding wire winding means for forming and sending the binding wire passed through this passage, Binding wire feeding means for feeding the binding wire to the winding means, binding wire cutting means for separating the binding wire winding portion sent out from the winding means, binding wire gripping means for gripping the binding wire winding portion, A binding wire twisting means for rotating the gripping means and twisting the binding wire winding portion gripped by the gripping means, and holding the binding wire sent out and wound from the winding means so that the binding state is not broken. The holding means is provided in parallel with the winding means.

[0003]

The above-described conventional binding machine has a very complicated structure and is large and expensive. Therefore, there is a technical problem to be solved in order to obtain an inexpensive reinforcing bar tie having a simple configuration, which can be miniaturized as much as possible, and the present invention solves the problem. With the goal.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above object, and the binding device has a disk, and a mounting shaft is provided upright at the center of the disk. Further, an insertion hole for an iron wire bent in a U-shape is formed on both sides of the mounting shaft so as to face each other, and a corner of a lower opening portion of the insertion hole is chamfered to reverse the insertion hole. It is formed in the shape of a funnel and presses the rising portion of the U-shaped iron wire against both side surfaces of the reinforcing bar to be bound, pushes up from the lower surface toward the upper surface and fits the same, and further, the upper end portion of the iron wire Is made to project upward, its tip is inserted into an insertion hole formed in the disc, and the disc is rotated by the rotation of an electric motor coupled with a mounting shaft erected at the center of the disc. Is rotated several times to twist the U-shaped iron wire on the upper surface of the reinforcing bar to be bound, and the U-shaped iron wire is Intramuscularly it is to provide a configured rebar tie to allow Yuibaku.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. In FIG. 1, reference numeral 1 denotes a reinforcing bar tying tool. The reinforcing bar binding device 1 includes a disc 2 and a mounting shaft 3 erected at the center of the disc 2. Thus, insertion holes 5, 5 for inserting rising portions 4 a, 4 a of a U-shaped iron wire 4, which will be described later, are formed in the disk 2 on both sides of the mounting shaft 3 so as to face each other. ing. As shown in FIG. 2, the insertion hole 5 extends through the upper and lower surfaces of the disk 2.
In addition, a corner of the lower surface of the insertion hole 5 is chamfered to form an inverted funnel. Further, since the insertion holes 5 need only be opened facing each other, the number of pairs is not limited to one.

The mounting shaft 3 has a hexagonal cross section, a male screw 3a is provided at the lower end thereof, and a female screw for screwing the male screw 3a to the center of the disk 2. A portion 1a is provided, and the male screw portion 3a is screwed tightly to the female screw portion 1a, and the mounting shaft 3 is integrally fixed to the disk 2. Thus, the mounting shaft 3 can be formed by a hexagonal square axis as described above. If so, the motor 6 described later
When the attachment shaft 3 is chucked to the chuck 6a provided at the lower part of the bracket, the chucking is surely performed, but the shape of the attachment shaft 3 is not limited to a hexagon.

The rebars 7, 7,... Arranged to construct the rebar structure are bound by iron wires at their intersections. The iron wire 4 used in the present invention is shown in FIG. As shown in FIG. 2, the rising portions 4a, 4a on both sides are bent in a substantially U-shape in advance, and the reinforcing bars 7, 7 intersecting each other are formed.
Of course are long enough to tie ...

Next, a procedure for binding the reinforcing bars 7, 7,...
A description will be given according to (a), (b) and (c). FIG. 3A shows a cross section of the iron wires 4 while pushing up the rising portions 4a, 4a of the iron wires 4 bent in a U-shape from the lower surfaces of the intersecting reinforcing bars 7, 7. The upper and lower rebars 7, 7 are fitted to the lower surfaces and both side portions thereof, and the upper ends of the rising portions 4a, 4a of the iron wire 4 are projected upward. Next, as shown in FIG.
The upper end of 4a is inserted through the lower surfaces of the insertion holes 5 and 5 provided in the disk 2. Since the insertion hole 5 is formed in a substantially inverted funnel shape by chamfering the corner of the lower surface, the insertion operation of the rising portions 4a of the iron wire 4 is also easily performed.

Since the mounting shaft 3 of the disk 2 is chucked by the chuck 6a of the electric motor 6, the holding portion 6b of the electric motor 6 is gripped and the insertion hole 5 of the disk 2 is inserted.
5 can be inserted through the rising portions 4a of the iron wire 4. The electric motor 6 may be a general-purpose electric motor. As described above, after the iron wire 4 is inserted into the insertion holes 5 and 5 of the disk 2, the electric motor 6 is rotated to rotate the electric motor 6. The rotation of the electric motor 6 is stopped by rotating the disk 2 several times in conjunction with the operation. Of course, the rotation and the stop operation can be turned on by pressing the electric motor 6 downward, and turned off when the pressing operation is released.

As shown in FIG. 1C, the rising portions 4a, 4a of the iron wires 4 inserted into the insertion holes 5, 5 of the disk 2 are twisted several times by the rotation of the disk 2. Can be
At this time, the iron wire 4 firmly binds the reinforcing bars 7,7. Thus, the U-shaped iron wire 4 has a diameter of 1.5 mm or less in advance.
By using a material having a diameter of about 2.00 mm, the binding force is further doubled, and the corner of the lower surface of the insertion hole 5 of the disk 2 is chamfered when the disk 2 rotates. Since the iron wire 4 is not cut at the corner of the insertion hole 5, the binding operation of the iron wire 4 by the rotation of the disk 2 is performed extremely smoothly. When the binding operation is completed, the disk 2
, And all ends of the iron wire 4 may be arbitrarily cut.

Incidentally, the size of the U-shaped iron wire 4 and the disk 2 can be changed by the size of the reinforcing bar, and the present invention is not limited to various modifications without departing from the spirit of the present invention. It is to be understood that the invention extends to the modifications.

[0012]

According to the present invention, as described in detail in the above-described embodiment, a U-shaped bent iron wire is fitted to the intersection of the reinforcing bars to be bound, and the rising of the iron wire is performed. The tip of the portion is made to protrude upward, and the tip of the rising portion is inserted into an insertion hole provided in the disk, and the disk is rotated several times by the rotation of the electric motor. In that case, the iron wire can firmly bind the crossing rebars. Thus, since the lower corner of the insertion hole provided in the disk is chamfered, the insertion operation and the torsion operation of the iron wire are performed extremely smoothly, and the configuration is simple and the size can be reduced. This is an invention that has a truly remarkable effect, for example, the cost can be significantly reduced, and the handling operation is extremely simple.

[Brief description of the drawings]

FIG. 1A is a plan view of a reinforcing bar tie showing an embodiment of the present invention. (B) A bottom view of the reinforcing bar tie.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view of a U-shaped iron wire.

FIG. 4 is a front view showing a state where the reinforcing bar tie of FIG. 1 is attached to an electric motor.

FIG. 5 (a) is a partially cutaway front view showing a state in which a U-shaped iron wire is fitted to a reinforcing bar to be bound. (B) A partially cutaway front view showing a state in which the iron wire of (a) is inserted through the insertion hole of the disc of the reinforcing bar binding device. (C) A partially cutaway enlarged front view showing a state in which the disk of the reinforcing bar binding device is rotated to twist the iron wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rebar binding tool 2 Disk 3 Mounting shaft 4 U-shaped iron wire 5 Insertion hole 6 Electric motor 7 Reinforcing bar

Claims (1)

[Claims] The binding device has a disc, a mounting shaft is provided upright at the center of the disc, and an insertion hole for an iron wire bent in a U-shape is formed on both sides of the mounting shaft. The insertion hole is formed in an inverted funnel shape by chamfering the corner of the lower opening portion of the insertion hole, and the rising portion of the U-shaped iron wire should be bound. While pressing against both side surfaces of the rebar, push up from the lower surface to the upper surface to fit them, further project the upper end portion of the iron wire upward, and insert the tip end portion into the insertion hole formed in the disc. By rotating an electric motor coupled with a mounting shaft erected at the center of the disc, the disc is rotated several times to attach the U-shaped iron wire to the upper surface of the reinforcing bar to be bound. A reinforcing-bar tying tool characterized in that the reinforcing bar can be bound by the U-shaped iron wire while being twisted.